Results 281 to 290 of about 128,355 (337)

An autonomous and wireless pulse-amplitude modulated chlorophyll fluorometer

TM. Technisches Messen, 2021
Measuring chlorophyll fluorescence is an important tool in plant research, since it is a reliable non-invasive method for capturing photosynthetic efficiency of a plant and, hence, an indicator of plant stress/health.
Julia Reimer, Sebastian Stöcklin, L. Comella, P. Woias, C. Werner, L. Reindl, Stefan J. Rupitsch   +6 more
semanticscholar   +1 more source

Fluorometer for Screening of Doxorubicin in Perfusate Solution and Tissue with Solid-Phase Microextraction Chemical Biopsy Sampling.

Analytical Chemistry, 2020
The recent development of an in vivo solid-phase microextraction (SPME) method capable of analyzing drugs and metabolic products in biofluids and living tissues holds great promise.
V. Galievsky, J. Pawliszyn
semanticscholar   +1 more source

Kinetic bacteriochlorophyll fluorometer

Photosynthesis Research, 2010
A pump and probe fluorometer with a laser diode as single light source has been constructed for measurement of fast induction and relaxation of the fluorescence yield in intact cells, chromatophores and isolated reaction centers of photosynthetic bacteria.
Péter, Kocsis, Emese, Asztalos, Zoltán, Gingl, Péter, Maróti   +3 more
openaire   +2 more sources

Integrated instrumental analysis teaching platform with smartphone-operated fluorometer.

Analytical Methods, 2020
The present work describes an Integrated Teaching Tool (ITT) to facilitate the learning process in analytical chemistry. The first instrument integrated in the platform to demonstrate the concept is a wireless, portable fluorometer, produced by 3D ...
Lucas B. Ayres, F. S. Lopes, Carlos D. Garcia, I. Gutz   +3 more
semanticscholar   +1 more source

A three-dimensional DNA walking machine for the ultrasensitive dual-modal detection of miRNA using a fluorometer and personal glucose meter.

Nanoscale, 2019
Three-dimensional (3D) DNA walking machines inspired by natural molecular machines have attracted significant attention due to their high walking efficiency and signal amplification capability.
Tingting Wu, Yu Cao, Yuemeng Yang, Xiaoyan Zhang, Shutao Wang, Li‐Ping Xu, Xueji Zhang   +6 more
semanticscholar   +1 more source

Single-Cell Liquid Biopsy of Lung Cancer: Ultra-Simplified Efficient Enrichment of Circulating Tumor Cells and Hand-Held Fluorometer Portable Testing.

ACS Nano
Herein, we propose a paper-based laboratory via enzyme-free nucleic acid amplification and nanomaterial-assisted cation exchange reactions (CERs) assisted single-cell-level analysis (PLACS).
Yaqin He, Zixuan Zhan, Li Yan, Chengyong Wu, Yue Wang, Congcong Shen, Ke Huang, Zeliang Wei, Feng Lin, B. Ying, Weimin Li, Piaopiao Chen   +11 more
semanticscholar   +1 more source

Phase and modulation fluorometer

Journal of Scientific Instruments, 1961
The instrument, which is designed for the measurement of fluorescence decay times of 10-7-10-9 s, comprises a 10 Mc/s hydrogen discharge lamp, fast photomultiplier, variable delay line and detector circuit for phase and modulation analysis of light signals from the lamp and specimen.
J B Birks, D J Dyson
openaire   +1 more source

Expedition automated flow fluorometer

SPIE Proceedings, 2015
This paper describes an apparatus and operation of automated flow-through dual-channel fluorometer for studying the fluorescence of dissolved organic matter, and the fluorescence of phytoplankton cells with open and closed reaction centers in sea areas with oligotrophic and eutrophic water type.
V. A. Krikun, P. A. Salyuk
openaire   +1 more source

Trends in fabrication, data gathering, validation, and application of molecular fluorometer and spectrofluorometer.

Spectrochimica Acta Part A - Molecular and Biomolecular Spectroscopy, 2019
Technological advances have widely improved the field of research as spectroscopic methods are now flexible in analyzing different sample matrix. There have been various methods used in applications of spectrofluorometer, but some were costly, time ...
John Adrian A Pascua, Anne Jizelle A Prado, Brad Randel B Solis, A. P. Cid-Andres, Christian Jay B Cambiador   +4 more
semanticscholar   +1 more source

Toward sensitive determination of ammonium in field: A novel fluorescent probe, 4,5-dimethoxyphthalaldehyde along with a hand-held portable laser diode fluorometer

Sensors and Actuators B: Chemical, 2018
A new fluorescent reagent, 4,5-dimethoxyphthalaldehyde (M2OPA) is synthesized for the determination of ammonium in environmental waters. M2OPA has a similar molecular structure as o-phthalaldehyde (OPA), a commonly used fluorescent probe for ammonium ...
Min Zhang, Tao Zhang, Ying Liang, Ying Pan   +3 more
semanticscholar   +1 more source